Question 1196556
<font color=black size=3>
This question has been answered previously at these links
<a href = "https://www.algebra.com/algebra/homework/Trigonometry-basics/Trigonometry-basics.faq.question.457671.html">https://www.algebra.com/algebra/homework/Trigonometry-basics/Trigonometry-basics.faq.question.457671.html</a>
<a href = "http://www.math-principles.com/2014/01/circular-arc-problems.html">http://www.math-principles.com/2014/01/circular-arc-problems.html</a>
</font>